WO2010016347A1 - 水蒸気プラズマ生成装置、並びに水蒸気プラズマを用いた滅菌・殺菌方法及び抗酸化処理方法 - Google Patents
水蒸気プラズマ生成装置、並びに水蒸気プラズマを用いた滅菌・殺菌方法及び抗酸化処理方法 Download PDFInfo
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- WO2010016347A1 WO2010016347A1 PCT/JP2009/062295 JP2009062295W WO2010016347A1 WO 2010016347 A1 WO2010016347 A1 WO 2010016347A1 JP 2009062295 W JP2009062295 W JP 2009062295W WO 2010016347 A1 WO2010016347 A1 WO 2010016347A1
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- Prior art keywords
- water vapor
- vapor plasma
- heated
- plasma
- oil
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/005—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating using irradiation or electric treatment
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B9/00—Preservation of edible seeds, e.g. cereals
- A23B9/02—Preserving by heating
- A23B9/04—Preserving by heating by irradiation or electric treatment
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/04—Heat
- A61L2/06—Hot gas
- A61L2/07—Steam
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/14—Plasma, i.e. ionised gases
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/20—Targets to be treated
- A61L2202/21—Pharmaceuticals, e.g. medicaments, artificial body parts
Definitions
- the present invention relates to a water vapor plasma generator, and a sterilization / sterilization method and an antioxidant treatment method using water vapor plasma.
- a sterilization / sterilization apparatus for food or the like for example, one using heated steam is known (International Publication No. 2004/068003 pamphlet). Specifically, jet water is introduced from one of the cylindrical bodies filled with the heated body composed of a plurality of spheres, and the heated body is induction-induced through an excitation coil wound around the outer circumference of the cylindrical body. By heating, heating steam is ejected from the other side of the cylindrical body. An apparatus for sterilizing and sterilizing by injecting this heated steam onto food or the like is described.
- antioxidants for example, a method of adding oxyacid (Japanese Patent Laid-Open No. 07-258682), a method of adding soy sauce produced as a by-product in the process of soy sauce brewing (Japanese Patent Laid-Open No. 11-012592), A method of imparting antioxidant properties by adding ⁇ -lipoic acid (Japanese Patent Laid-Open No. 2008-013630) has been studied.
- the present invention has been made in view of the above circumstances, and can stably sterilize and sterilize a large amount of an object to be processed in a short time, and can stably stabilize a water vapor plasma capable of antioxidant treatment of an oil component-containing substance. It is an object of the present invention to provide a water vapor plasma generation apparatus that can be generated in the above manner.
- the inventors of the present invention have made researches focusing on very active atoms and molecules of plasma, and can stably generate water vapor plasma by using an apparatus having a plurality of heated members having a specific configuration.
- the present invention was completed. Moreover, it discovered that the sterilization and sterilization effect were acquired by the process for a short time by irradiating the to-be-processed object with the water vapor plasma produced
- Water vapor plasma comprising: a heated body that flows out the flowing water vapor as water vapor plasma, and has conductivity; and a coil that is wound around the heated body and that is supplied with a high frequency and electromagnetically heats the heated body.
- a generating device The heated body is composed of a plurality of heated members integrally connected from the water vapor inflow side to the water vapor plasma outflow side, The plurality of heated members include a through-hole whose number is gradually reduced from the inflow side of the water vapor to the outflow side of the water vapor plasma, and the water vapor together with the through hole on at least one of the surfaces facing each other.
- a recess that constitutes the passband of The coil has a hollow tube at the center of its linear body, and the hollow tube is a water vapor plasma generator, which is a flow path through which a coolant flows.
- the present invention is a method for sterilizing and sterilizing an object to be processed, including a step of irradiating the object to be processed with water vapor plasma generated using the above apparatus.
- the present invention is also a method for antioxidant treatment of an oily component, including a step of irradiating the oily component-containing substance with water vapor plasma generated using the above apparatus.
- the present invention is also a food production method including a step of irradiating the food with water vapor plasma generated using the above apparatus.
- the present invention it is possible to provide a water vapor plasma generation apparatus that can stably generate water vapor plasma.
- a water vapor plasma generation apparatus that can stably generate water vapor plasma.
- it is easy to irradiate food without destroying nutrients in food by irradiating such water vapor plasma to objects such as food. Can be sterilized and sterilized. As a result, the state of preservation of foods and the like in a high temperature and high humidity region can be kept good.
- the oil component-containing substance can be easily subjected to an antioxidant treatment in a very short time without destroying the components in the substance.
- the storage period of foods, supplements, medicines and the like containing oily components can be greatly extended.
- foods and the like that are difficult to market due to anti-oxidation treatment can be put on the market by performing an antioxidant treatment with a simple method.
- Example of water vapor plasma generator used in the present invention is a side view of an example of a heated disk member positioned at the extreme end on the side where water vapor flows from the steam boiler, and (B) is a front view of the heated disk member shown in FIG. It is.
- (A) is a side view of an example of a heated disk member located at the extreme end on the side from which water vapor plasma flows out, and (B) is a front view of the heated disk member shown in FIG. 3 (A).
- (A) is a cross-sectional view showing one configuration of a processing chamber for irradiating water vapor plasma of the present invention, and (B) is a cross-sectional view taken along the line BB of the processing chamber shown in (A).
- (A) is a cross-sectional view showing one configuration of a processing chamber for irradiating water vapor plasma of the present invention
- (B) is a cross-sectional view taken along the line BB of the processing chamber shown in (A).
- the water vapor plasma generator of the present invention includes a heated body and a coil for electromagnetically heating the heated body.
- the water vapor that has flowed into the heated body is heated in the heated body, becomes ionized, and flows out as water vapor plasma.
- the object to be heated for heating water vapor is wound by a coil for electromagnetic induction heating.
- the heated object is heated by electromagnetic induction by supplying high frequency to the coil. Since the member to be heated is heated by electromagnetic induction, it needs to be a member having conductivity.
- the water vapor plasma of the present invention is preferably at 250 ° C. to 850 ° C.
- the member to be heated is preferably made of a material having stability even at a temperature of 850 ° C. Specific examples include iron, stainless steel, and copper.
- the flowing water vapor is heated by the heated body, but is preferably heated to 250 ° C. or higher. This is because the water vapor plasma is stably generated when the temperature is 250 ° C. or higher.
- the high-frequency output is preferably 30 kW or more. This is because water vapor plasma can be generated stably.
- the member to be heated is composed of a plurality of members to be heated integrally connected from the inflow side of the water vapor to the outflow side of the water vapor plasma.
- the plurality of heated members are provided with through-holes whose number is gradually reduced from the inflow side of the water vapor to the outflow side of the water vapor plasma, and the through holes on at least one of the surfaces facing each other. A recess that forms a water vapor passage area is formed.
- the water vapor that has flowed into the heated body is heated by the electromagnetic induction heated heated body, and the number of through holes and water vapor that gradually decreases toward the outflow side. Passes through the recesses that make up the zone At this time, since the heated member is gradually restricted in the passage area toward the outflow side, the steam gradually expands while colliding with the heated disk member, and the force passing through the through hole gradually increases. As a result, it becomes ionized and flows out as water vapor plasma.
- the coil wound around the heated body has a hollow tube at the center of the wire. It is necessary to flow a coolant through the hollow tube.
- the type of the coolant is not particularly limited, but it is preferable from the viewpoint of cost to use water.
- the temperature of the cooling liquid is not particularly limited, but when cooling water is used, it may be about 10 to 40 ° C. close to normal temperature.
- the plasma processing apparatus 1 is a water vapor plasma generated by a water vapor plasma generating apparatus 10 for microorganisms and pests such as general living bacteria, coliform bacteria, and spore bacteria present on the surface of an object to be processed such as food, food, data, and pharmaceuticals. It is a device that sterilizes and sterilizes by means of. In addition, it is an apparatus for subjecting oily component-containing substances such as foods, supplements, medicines, quasi drugs, cosmetics, and feeds to an antioxidant treatment with water vapor plasma generated by the water vapor plasma generator 10.
- the plasma processing apparatus 1 includes a water vapor plasma generation device 10, a processing chamber 20, an inverter 30, a steam boiler 40, and a coolant tank 50.
- the water vapor plasma generation apparatus 10 is an apparatus that generates water vapor plasma that irradiates an object to be processed such as food.
- the water vapor plasma generator 10 includes a heated body 11, a coil 12 for electromagnetically heating the heated body 11, a heat insulating material 13 that covers and heats the heated body 11, and a steam boiler 40 on the heated body 11.
- a water vapor inflow portion 71 for inflowing the water vapor generated in step 1 a water vapor plasma outflow portion 72 for outflowing the water vapor plasma generated from the heated body 11, and an injection nozzle for injecting the water vapor plasma into the processing chamber 20 73.
- the water vapor plasma generator 10 is protected by a plastic insulating cover (not shown).
- the heated object 11 is heated by electromagnetic induction by the coil 12 to which the high frequency current from the inverter 30 is supplied.
- the heated body 11 is preferably composed of a plurality of heated disk members 11a having conductivity.
- the object to be heated is not necessarily a disk member, but a disk shape is preferable in view of the efficiency of electromagnetic induction heating of the object to be heated by a coil.
- a conductive material is used, for example, a metal such as iron, stainless steel, nickel, titanium, or a conductive ceramic material such as carbon ceramic.
- the plurality of heated disk members 11 a are integrally connected from the steam boiler 40 side to the steam plasma flow side to the steam plasma flow side. Further, as shown in FIGS. 2 and 3, the heated disk member 11a is formed with a plurality of through holes 111a, and a plurality of grooves 112a are formed on the front and back surfaces of the heated disk member 11a. .
- FIG. 2 shows a heated disk member 11a positioned at the extreme end on the side where water vapor flows from the steam boiler 40
- FIG. 3 shows a heated disk member 11a positioned at the extreme end on the side where water vapor plasma flows out. Show.
- the through-holes 111a formed in the heated disk member 11a are formed so that the number thereof gradually decreases from the steam boiler 40 flowing side toward the water vapor plasma flowing side.
- the number of through-holes 111a formed in the heated disk member 11a disposed at the extreme end on the side where water vapor flows from the steam boiler 40 is, for example, 100, one on the side where water vapor plasma flows out.
- the number of through holes 111a formed in the heated disk member 11a disposed at the end is, for example, ten.
- the number of members to be heated integrally provided and the number is determined according to the output of the high frequency, the frequency, the type and amount of the object to be processed, and the like.
- a space 113a (FIG. 1) is formed between the plurality of heated disk members 11a.
- the range of water vapor that has flowed into the body 11 to be heated is limited only in the space 113a and the through-hole 111a, and the number of through-holes 111a decreases as it moves toward the water vapor plasma. The range is gradually limited.
- the water vapor flowing into the heated body 11 is heated to a temperature of 250 ° C. or higher by the heated body 11 heated by electromagnetic induction, and gradually decreases in number toward the outflow side and in the space 113a. Passing through only, the passage area is gradually limited toward the outflow side. For this reason, the water vapor gradually expands while colliding with the heated disk member 11a, and the force passing through the through hole 111a gradually increases. As a result, the water vapor becomes ionized and flows out as water vapor plasma. In addition, although the passage area is gradually restricted toward the outflow side, the inflowing water vapor does not flow backward.
- steam which flowed into the to-be-heated body 11 is electromagnetic induction heating
- steam heated is lower than 250 degreeC, it exists in the tendency for water vapor
- the through holes 111a and the grooves 112a are respectively formed in a plurality of square plates. Then, each square plate is joined by welding. A plurality of joined square plates can be used as they are to be heated as they are to be heated, and can also be made to be heated by forming them into a disk shape with a lathe.
- the coil 12 has a hollow tube at the center of the wire body, and prevents the coil 12 itself from generating heat by flowing a cooling liquid from the inflow hose 51 to the hollow tube, and the fluid that passes through the heated body 11. The temperature can be stabilized. If the coolant is not supplied to the coil 12, the temperature of the fluid passing through the heated object 11 becomes unstable, and water vapor plasma cannot be generated.
- the inverter 30 is a device that applies high-frequency induction heating to the heated object 11 via the coil 12.
- the inverter 30 is a high-frequency inverter, and the high-frequency output is preferably about 30 to 500 kW, and the frequency is preferably 10 to 20 kHz.
- the inverter 30 is electrically connected to the coil 12 by a conductive wire 31.
- the water vapor plasma generation apparatus 10 can stably generate the water vapor plasma.
- the coolant inflow hose 51 from the coolant tank 50 also passes through the inverter 30 to remove heat from the semiconductor elements and the like disposed therein.
- the steam boiler 40 is connected to the water vapor plasma generation apparatus 10 via a water vapor inflow portion 71 by a conduit 60.
- the conduit 60 is provided with an on-off valve 61 and a check valve 62 for steam generated by the steam boiler 40.
- the coolant tank 50 allows the coolant to flow into one end of the wire body of the coil 12 and also removes the inside of the inverter 30 from the inflow hose 51 and causes the coolant to flow out from the other end of the wire body of the coil 12. And an outflow hose 52.
- the processing chamber 20 includes a cylindrical main body 21, an object input port 22 disposed above the main body, an object input adjusting unit 23, and a water vapor plasma irradiation opening 24 formed on the side wall of the main body 21. And an installation base 25 that supports the main body 21.
- a water vapor plasma introduction tube 74 is connected to the water vapor plasma irradiation opening 24.
- the temperature of the water vapor plasma in the main body 21 is a stable temperature between 250 ° C. and 850 ° C.
- the temperature of the water vapor plasma can be appropriately set according to the type of the object to be processed.
- the object to be processed is supplied from the object input port 22.
- water vapor plasma is irradiated to the workpiece. Thereby, plasma irradiation processing is performed.
- the processing chamber 20 can be appropriately changed in design according to the type of the object to be processed.
- the workpiece is introduced from above the processing chamber, and the water vapor plasma is instantaneously irradiated while dropping due to gravity.
- the processing chamber is designed to be long in the horizontal direction, By using it, it is possible to design it so that plasma can be irradiated for a relatively long time.
- the design should be changed as appropriate, such as installing a net to hold a piece of meat at the plasma inlet in the processing chamber and installing a saucer for the dissolved oil at the lower part. Is possible.
- the structure of the heated body 11 is configured such that the passage region of the water vapor that flows in is gradually limited toward the outflow side. Further, by supplying a cooling liquid to the wire body of the coil 12 and stabilizing the temperature of the water vapor passing through the heated body 11, the high-frequency inverter 30 can supply a high frequency. As a result, stable water vapor plasma can be generated. Therefore, it has become possible to use water vapor plasma for various purposes.
- the present invention has been described above with reference to the embodiment. However, the present invention is not limited to the above embodiment, and various modifications can be made.
- the heated object 11 is configured by the heated disk member 11a has been described.
- the member to be heated may be in the shape of a square, a sphere, an indeterminate block, or the like.
- the example in which the number of through-holes 111a formed in the heated disk member 11a is gradually reduced from 100 to 10 toward the outflow side has been described.
- the method of reducing the sheath is determined according to the number and size of the heated disk member 11a itself, the output of the high frequency, the frequency, the type and amount of the object to be processed, and the like.
- the example in which the groove 112a is formed in the heated disk member 11a to form the space 113a has been described.
- any concave portion that can form the space 113a may be used. It is also possible to form a heated disk member to form.
- the heated disk members 11a may be formed on only one of the opposing surfaces. Further, depending on the position where the heated disk member 11a is disposed, there is a case where the groove 112a is not formed.
- the steam boiler 40 is used to generate water vapor that flows into the heated object 11 .
- any device that generates water vapor may be used.
- water is stored in a tank. The water flowing out may be heated electrically to generate water vapor.
- the configuration of the processing chamber 20 can be appropriately changed depending on the type of the object to be processed. For example, when a drop type such as the processing chamber 20 is used, since the time during which the object to be processed is irradiated with water vapor plasma is short, sterilization / sterilization processing of foods with small grains such as wheat, flaxseed, rapeseed, etc. Particularly suitable for antioxidant treatment of vegetable oil raw materials.
- the processing chamber includes a processing chamber main body, a horizontal cylindrical shape in which an object to be processed is accommodated and a mesh portion accommodated in the processing chamber, and a screw blade fixed to the mesh portion and stirring the object to be processed. It is preferable to use a processing chamber provided with a rotating body housed in the motor, a motor for rotating the rotating body, and a water vapor plasma supply unit for supplying water vapor plasma into the processing chamber.
- the processing chamber 211 is housed in the processing chamber and also has a mesh-like rotating body 212 in which an object to be processed such as food is stored, and a water vapor plasma supply unit that supplies water vapor plasma into the processing chamber.
- 213 a motor 214 that rotationally drives the mesh-like rotating body 212, a gear portion 215 (215a, 215b) that fixes the mesh-like rotating body 212 and transmits the driving force of the motor 214 to the mesh-like rotating body 212,
- An input unit 216 for inputting an object to be processed into the net-like rotating body 212, and a guide plate 219 for disposing the object to be processed after sterilization and sterilization are disposed on the opposite side of the input unit 216. ing.
- the rotating body 212 is for stirring the contained object in sterilization / sterilization treatment and antioxidant treatment.
- the rotating body 212 includes a mesh part 212a, screw blades 212b, a stirring plate 212c, and a fixed part 212d.
- the net part 212a is configured by a horizontal cylindrical net.
- the mesh portion 212a has a mesh size changed according to the fineness of the object to be processed.
- One end of the net part 212a has an input opening 212e into which the object to be processed is input, and the other end of the net part 212a has an extraction opening 212f from which the object to be processed is taken out.
- the screw blade 212b stirs the object to be processed accommodated in the mesh part 212a.
- the screw blades 212b are continuously formed in a spiral shape, and can be rotated with the central axis of the mesh portion 212a as a rotation axis.
- the thickness of the screw blade 212b is changed according to the type of the object to be processed. Therefore, the thickness of the rotating body 212 is changed according to the type of the object to be processed. Therefore, in the rotating body 212, the size of the mesh of the mesh portion 212a, the thickness of the screw blade 212b, and the like can be adjusted according to the type of the object to be processed.
- the stirring flat plate 212c is accommodated in the mesh part 212a together with the screw blades 212b and stirs the workpiece.
- the stirring plate 212c is used when the object to be processed is, for example, noodles and the rotation speed of the rotating body 12 is low.
- the stirring flat plate 212c is fixed at equal intervals on the inner peripheral surface of the net 212a along the extending direction of the net 212a.
- the pair of fixing portions 212d are for detachably storing and fixing the rotating body 212 in the processing chamber 212 via the gear portion 215.
- the fixed part 212d is formed on the forest.
- the pair of fixing portions 212d are attached to both ends of the net portion 212a, and screw holes (not shown) into which the bolts 217 are screwed are formed.
- the fixing portions 212d are fixed to the pair of gear portions 212 disposed in the processing chamber 211 by screwing bolts 217 into the screw holes, respectively.
- the water vapor plasma supply unit 213 is connected to a water vapor plasma generator, and is constituted by a bifurcated tube.
- the water vapor plasma supply unit 213 is disposed above the rotating body 212 in the processing chamber 211.
- a plurality of holes 213a (FIG. 4B) for discharging water vapor plasma are formed.
- a gear 218 a is fixed to the rotating shaft 214 a of the motor 214 in the processing chamber 211.
- the gear 218a meshes with the gear portion 215a on the input portion 216 side. Therefore, the driving force of the motor 214 is transmitted to the rotating body 212 via the gear 218a and the gear portion 215a.
- a gear 218b is arranged at a position parallel to the gear 218a below the processing chamber 211.
- the gear 218b also meshes with the gear portion 215a on the closing portion 216 side to assist and support the rotation of the gear portion 215a.
- the bearing 220 is disposed in the processing chamber 211 to guide the inner peripheral surface of the gear portion 215a in order to prevent the rotating body 212 from floating.
- gears 218c and 218d provided in the processing chamber 211 are meshed with the gear portion 215b on the guide plate 219 side in parallel.
- the gear portion 215b is supported and rotated smoothly by the gears 218c and 218d.
- the processing chamber can be configured as shown in FIG. Hereinafter, based on FIG. 5, only a different part from FIG. 4 is demonstrated.
- the rotating body 212 includes a rotating shaft 222g.
- the rotating shaft 222g and the screw blade 222b continuously formed in a spiral are integrally formed.
- the rotating shaft 222g is detachably connected to a rotating shaft of a motor (not shown), and is rotatably supported outside the processing chamber 211.
- the rotating body 212 does not include the stirring plate 212c in the form of FIG.
- the rotating shaft 212g of the rotating body 212 is rotationally driven by a motor to rotate the rotating body 212.
- the rotating body 212 can be rotated with a configuration easier than that of the first embodiment, and processing similar to that of the embodiment of FIG. 4 can be performed.
- the object to be processed can be sterilized and sterilized by putting the object to be processed into the processing chamber described above and irradiating the object with the water vapor plasma generated by the water vapor plasma generator. Further, the oily component can be subjected to an antioxidant treatment by irradiating the oily component-containing substance with water vapor plasma. Further, it can be used for food processing such as roasting.
- sterilization and sterilization are performed by irradiating the object to be processed with the water vapor plasma of the present invention, sterilization and sterilization is performed in a very short time.
- the object to be processed is a food such as wheat, protein It can be sterilized and sterilized without denaturing or degrading nutrients such as vitamins and minerals.
- the object to be treated is not particularly limited, but in particular, in the case of food, it can be applied to various foods such as soybeans, wheat, red beans, coffee, and noodles. Further, the present invention can be similarly applied to feed for livestock and agricultural products, such as waste food.
- Irradiation with water vapor plasma can sterilize and sterilize microorganisms such as general live bacteria, coliform bacteria, Escherichia coli, and spore bacteria present on the surface of the object to be treated, especially in high-temperature and high-humidity conditions where bacteria can easily propagate. Very useful for food preservation.
- the sterilization / sterilization method using the water vapor plasma of the present invention the sterilization / sterilization effect is produced by irradiation of the object to be processed within 30 seconds. Depending on the type of the object to be processed, the effect can be exhibited even by irradiation for a shorter time, and the irradiation time can be appropriately set according to the type of the object to be processed.
- the oil component-containing substance means foods, supplements, medicines, quasi drugs, cosmetics, feeds and the like containing oil components such as edible fats and oils, unsaturated fatty acids, carotenoids, phospholipids and oil-soluble vitamins.
- oil components such as edible fats and oils, unsaturated fatty acids, carotenoids, phospholipids and oil-soluble vitamins.
- the oily component-containing substance it is a concept that includes a substance in a state of containing the oily component in the production process of the product, such as a composition containing the oily component.
- the composition itself containing an oil-based component is also included, and includes a substance in a state of containing an oil-based component in the manufacturing process of a product.
- edible oils and fats include vegetable oils (wheat germ oil, coconut oil, evening primrose oil, avocado oil, almond oil, linseed oil, sesame oil, kyounin oil, walnut oil, refined olive oil, sesame oil, refined camellia oil, tea seed oil , Hato oil, jojoba oil, borage seed oil, yuzu seed oil, yucha oil, rosehip oil, horse oil, lamprey oil, suppon oil, cacao butter, rice bran oil, brown rice germ oil, soybean oil, cottonseed oil, rapeseed oil, Palm oil, palm kernel oil, palm oil, corn oil, peanut oil, safflower oil, castor oil, drill oil, etc.), animal oil (eg, beef tallow, pork fat, chicken fat, milk fat, egg yolk oil, etc.), fish oil (eg Sardine oil, mackerel oil, liver oil, whale oil, etc.), or processed oils thereof (for example, fractionated oil, hydrogenated oil, transesterified oil, etc.
- Examples of the unsaturated fatty acid include those having one or more unsaturated bonds in the molecule, and the number of carbon atoms is not particularly limited.
- carotenoids examples include, for example, carotene such as ⁇ -, ⁇ -, and ⁇ -, capsaxanthin, astaxanthin, lutein, zeaxanthin, lycopene, crocin, anato, and algae, microorganisms, plants, animals, and the like containing these components. Thing etc. are mentioned.
- phospholipids examples include soy lecithin, egg yolk lecithin, phosphatidylcholine, sphingosine, phosphatidylethanolamine, phosphatidylinositol, phosphatidyl chrysolol, enzyme-treated lecithin, and fractionated lecithin.
- oil-soluble vitamins examples include vitamin A, for example, fatty acid esters such as vitamin A acetate and vitamin A palmitate, vitamin A oil, and the like.
- the sterilization / sterilization treatment and anti-oxidation treatment of the present invention may be performed by irradiating the raw material with water vapor plasma as long as it is a food product, or by irradiating with water vapor plasma after making a processed product.
- irradiating the raw material with water vapor plasma as long as it is a food product
- water vapor plasma after making a processed product.
- antioxidant treatment of vegetable oil, which is food, rapeseed or flaxseed, which is the raw material may be irradiated with water vapor plasma in the raw state and then oiled, and then oiled first and then irradiated with water vapor plasma. You may do it.
- the raw material roasted previously can also be used.
- the effect of having been antioxidant can be determined by measuring, for example, an AV (acid value) value or a POV (peroxide value) value. Specifically, it can be determined that oxidation is proceeding when the AV value is 2 or more and the POV value is 20 or more in the case of food. Further, when the oil component is oxidized, an odor called “return odor” or “deteriorated odor” is generated. Therefore, it is possible to determine the antioxidant effect by confirming the odor.
- Example 1 The processing chamber of the water vapor plasma generator shown in FIG. 1 is the processing chamber of FIG. 5, the high-frequency output is set to 30 kW, the frequency is set to 20 kHz, the plasma temperature is set to 400 ° C., and soybeans, wheat and red beans are respectively set in the processing chambers.
- the water vapor plasma was irradiated. The presence of bacteria before and after irradiation with water vapor plasma was confirmed. The results are shown in Table 1.
- the object to be treated was soybean, the number of general viable bacteria decreased, and the spore bacteria group was not detected.
- the material to be treated was wheat, the coliform group was negative, the number of general viable bacteria was decreased or not detected, the spore bacteria group was not detected, and the Bacillus cereus was negative.
- the object to be treated was red beans, the number of general viable bacteria was decreased or not detected, and the spore bacteria group was decreased or not detected.
- Example 2 The processing chamber of the water vapor plasma generator shown in FIG. 1 is a drop type, wheat is introduced into the processing chamber with a high frequency output of 30 kW and a frequency of 20 kHz, and water vapor plasma is irradiated. The presence of bacteria before and after irradiation with water vapor plasma was confirmed. As a comparative example, sterilization and sterilization treatment using heating steam, which has been conventionally used, was performed. The results are shown in Table 2.
- the processing chamber of the water vapor plasma generator shown in FIG. 1 is a drop type as it is, the high frequency output is set to 30 kW, the frequency is set to 20 kHz, the plasma temperature is set to 300 ° C., and 30 kg of raw rapeseed is input from the workpiece inlet 22. And it hold
- the rapeseed subjected to the antioxidant treatment was squeezed to obtain about 20 L of rapeseed oil. Thereafter, the obtained rapeseed oil was sealed in a transparent polypropylene container and stored in a cool and dark place at room temperature for 36 months.
- AV (acid number) test and POV (peroxide number) test were performed.
- the AV test was measured using AV-CHECH paper (manufactured by Toyo Roshi Kaisha, Ltd.), and the POV test was measured using POV test paper (manufactured by Shibata Kagaku Co., Ltd.).
- AV-CHECH paper manufactured by Toyo Roshi Kaisha, Ltd.
- POV test was measured using POV test paper (manufactured by Shibata Kagaku Co., Ltd.).
- an AV value between 0.5 and 1.0 was shown.
- Example 4 By installing an iron net in the processing chamber of the water vapor plasma generator shown in FIG. 1, chicken water, beef and pork are held in the water vapor plasma irradiation opening 24 and irradiated with water vapor plasma at 300 ° C., the chicken meat and beef The oil was prepared by dissolving pork. Meat pieces irradiated with water vapor plasma are instantly melted and fall as oil, and the oil generated in a receiver (not shown) accumulates. The chicken oil thus produced was designated as sample 1, beef oil as sample 3, and pork oil as sample 5.
- Oil was prepared from chicken, beef, and pork by the cooking method used to prepare ordinary animal oil.
- the chicken oil thus produced was designated as sample 2, beef oil as sample 4, and pork oil as sample 6.
- Example 2 With respect to each of the oil obtained in Example 2 and the oil obtained in Comparative Example 1, the change over time in AV value and POV value in a dark place storage at 40 ° C. was measured. Samples 1 to 6 were sealed in 6 portions of 20 g each in a 100 g vial and sealed in a dark place at 40 ° C. The AV value and POV value were measured for 1 to 4 weeks, starting from the start of storage. The results are shown in Tables 3 and 4.
- the oil prepared by irradiating with water vapor plasma is less oxidized than the oil prepared by the usual method.
- Tempura was fried using the rapeseed oil obtained in Example 3 (after storage for 36 months).
- the fried tempura was put in a transparent polypropylene food bag and stored in a sealed state with air in the bag.
- the storage was performed at 40 ° C. in a bright place exposed to direct sunlight. After 23 days, when the color change was confirmed by visual observation, there was no color change and no mold was observed. Moreover, when the bag was opened and the smell of tempura was confirmed, there was no return odor or deterioration odor.
- the water vapor plasma generated by the water vapor plasma generator of the present invention has a sterilizing / sterilizing action and an antioxidant action.
- sterilization / sterilization method of the present invention sterilization / sterilization can be performed by a simple method without destroying the ingredients of the food.
- the antioxidant treatment method of the present invention can be applied to various industrial fields such as foods, supplements, medicines, quasi drugs, cosmetics and feeds that are such oily component-containing substances.
- the shelf life and the expiration date for consumption will be significantly increased, which is useful for industry. The nature is extremely large.
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Abstract
Description
流入した水蒸気を水蒸気プラズマとして流出させるとともに導電性を有する被加熱体と、前記被加熱体に巻回されるとともに、高周波が供給され前記被加熱体を電磁誘導加熱するコイルとを備えた水蒸気プラズマ生成装置であって、
前記被加熱体は、水蒸気の流入側から水蒸気プラズマの流出側へ向かって一体に連設された複数の被加熱部材により構成され、
前記複数の被加熱部材には、配置位置が水蒸気の流入側から水蒸気プラズマの流出側に向かうにつれて徐々に数が減らされた貫通孔と、それぞれが対向する面の少なくとも一方に前記貫通孔とともに水蒸気の通過域を構成する凹部とが形成され、
前記コイルは、その線体の中心に中空管を有し、前記中空管は冷却液が流される流路である、水蒸気プラズマ発生装置。
高周波の出力が30kW以上であることにより、水蒸気プラズマ生成装置10により水蒸気プラズマを安定して生成することができる。なお、インバータ30内にも冷却液タンク50からの冷却液の流入ホース51が通っており、内部に配置された半導体素子等を除熱する。
サプリメントや医薬、医薬部外品、化粧料であれば、油性成分を含有する組成物のみ先に水蒸気プラズマを照射した後に目的物を調製することもでき、目的物を調製した後に水蒸気プラズマを照射することもできる。
図1に示す水蒸気プラズマ発生装置の処理室を、図5の処理室とし、高周波の出力を30kW、周波数を20kHz、プラズマの温度を400℃に設定し、大豆、小麦及び小豆をそれぞれ処理室に投入し、水蒸気プラズマを照射した。水蒸気プラズマの照射の前後での細菌の存在を確認した。その結果を表1に示す。
被処理物が小麦の場合には、大腸菌群が陰性となり、一般生菌数が減少又は検出されなくなり、芽胞菌群が検出されなくなり、セレウス菌が陰性となった。
被処理物が小豆の場合には、一般生菌数が減少または検出されなくなり、芽胞菌群が減少または検出されなくなった。
図1に示す水蒸気プラズマ発生装置の処理室そのまま落下式とし、高周波の出力を30kW、周波数を20kHzとして小麦を処理室に投入し、水蒸気プラズマを照射した。水蒸気プラズマの照射の前後での細菌の存在を確認した。比較例として、従来用いられている加熱蒸気による滅菌・殺菌処理を行った。結果を表2に示す。
図1に示す水蒸気プラズマ発生装置の処理室をそのまま落下式とし、高周波の出力を30kW、周波数を20kHz、プラズマの温度を300℃に設定し、生の菜種30kgを被処理物投入口22から投入し、水蒸気プラズマ照射開口部24からのプラズマが照射される位置で5秒間保持し、抗酸化処理を行った。
次に抗酸化処理を行った菜種を搾油し、菜種油約20Lを得た。その後、得られた菜種油を透明のポリプロピレン容器に封入し、そのまま36ヶ月間常温で冷暗所に保管した。
(1)容器を目視にて色の変化を確認したところ、色の変化はなかった。
(2)容器の蓋を開け、油の臭いを確認したところ、戻り臭や変敗臭はなかった。
(3)油の酸化の程度を測定するために、AV(酸価)テスト及びPOV(過酸化物価)テストを行った。AVテストは、AV-CHECH紙(東洋濾紙株式会社製)を用いて測定し、POVテストは、POV試験紙(柴田科学株式会社製)を用いて測定した。AVテストの結果、0.5~1.0の間のAV値を示した。また、POVテストの結果、0~10の間のPOV値を示した。なお、AV値による測定では、2以下の値であれば油の酸化は殆どみられないと判断できる。また、POV値による測定では、20以下の値であれば油の酸化は殆どみられないと判断できる。
これらの結果から、本発明の抗酸化処理を施した菜種油は、36月経過しても酸化していないことがわかる。
図1に示す水蒸気プラズマ発生装置の処理室中に鉄製の網を設置することで、水蒸気プラズマ照射開口部24に鶏肉、牛肉、豚肉を保持し、300℃の水蒸気プラズマを照射して鶏肉、牛肉、豚肉を溶解させて油を調製した。水蒸気プラズマが照射された肉片は瞬時に溶解し油となって落下し、図示されていない受容器に生成した油が溜まる。このように生成した鶏油を試料1、牛油を試料3、豚油を試料5とした。
通常の動物性油の調製に用いられる煮取り法により鶏肉、牛肉、豚肉から油を調製した。このように生成した鶏油を試料2、牛油を試料4、豚油を試料6とした。
上記実施例2で得られた油と、比較例1で得られた油のそれぞれについて、40℃暗所保管でのAV値及びPOV値の経時変化の測定を実施した。
上記試料1~6を100gバイアル瓶に各20gずつ、6本に小分けして密閉し、40℃暗所で保存した。保存を始めた開始時を0週とし、1~4週のAV値及びPOV値を測定した。結果を表3及び4に示す。
実施例3で得られた菜種油(36ヶ月保管後)を用いて、天ぷらを揚げた。揚げた天ぷらを透明なポリプロピレン製食品用封入袋に入れ、袋内に空気が入った状態で密閉保管した。保管は40℃にて直射日光があたる明所にて保管した。
23日経過したところで、目視にて色の変化を確認したところ、色の変化はなく、カビなども全く見られなかった。また、袋を開封し、天ぷらの臭いを確認したところ、戻り臭や変敗臭はなかった。
10 水蒸気プラズマ生成装置
11 被加熱体
11a 被加熱円盤部材
12 コイル
13 断熱材
20 処理室
21 処理室本体
22 被処理物投入口
23 被処理物投入量調整部
24 水蒸気プラズマ照射開口部
25 設置台
30 インバータ
31 導電線
40 蒸気ボイラ
50 冷却液タンク
51 流入ホース
52 流出ホース
60 導管
61 開閉弁
62 逆止弁
71 水蒸気流入部
72 水蒸気プラズマ排出部
73 噴射ノズル
74 水蒸気プラズマ導入管
111a 貫通孔
112a 溝
113a 空間
211 処理室
211a 処理室本体
211b 上蓋
212 回転体
212a 網部
212b スクリュー羽根
212c 攪拌平板
212d 固定部
212e 投入開口部
213 蒸気供給部
214 モータ
215 ギヤ部
216 投入部
217 ボルト
218 歯車
219 案内板
222b スクリュー羽根
222g 回転軸
Claims (6)
- 流入した水蒸気を水蒸気プラズマとして流出させるとともに導電性を有する被加熱体と、前記被加熱体に巻回されるとともに、高周波が供給され前記被加熱体を電磁誘導加熱するコイルとを備えた水蒸気プラズマ生成装置であって、
前記被加熱体は、水蒸気の流入側から水蒸気プラズマの流出側へ向かって一体に連設された複数の被加熱部材により構成され、
前記複数の被加熱部材には、配置位置が水蒸気の流入側から水蒸気プラズマの流出側に向かうにつれて徐々に数が減らされた貫通孔と、それぞれが対向する面の少なくとも一方に前記貫通孔とともに水蒸気の通過域を構成する凹部とが形成され、
前記コイルはその線体の中心に中空管を有し、前記中空管は冷却液が流される流路である、水蒸気プラズマ生成装置。 - 前記流出する水蒸気プラズマの温度が250℃以上であることを特徴とする請求項1に記載の水蒸気プラズマ生成装置。
- 前記高周波の出力が30kW以上であることを特徴とする請求項1に記載の水蒸気プラズマ生成装置。
- 請求項1~3のいずれか1項に記載の水蒸気プラズマ生成装置により発生した水蒸気プラズマを被処理物に照射する工程を含む、被処理物の殺菌・滅菌方法。
- 請求項1~3のいずれか1項に記載の水蒸気プラズマ生成装置により発生した水蒸気プラズマを油性成分含有物質に照射する工程を含む、油性成分含有物質の抗酸化処理方法。
- 請求項1~3のいずれか1項に記載の水蒸気プラズマ生成装置により発生した水蒸気プラズマを食品に照射する工程を含む、食品の製造方法。
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US9585390B2 (en) * | 2010-08-03 | 2017-03-07 | Drexel University | Materials for disinfection produced by non-thermal plasma |
CN103702689B (zh) | 2011-05-27 | 2016-08-17 | 马尔科尔净化装置公司 | 包括使用净化物质的环境控制的净化系统 |
WO2013133455A1 (ja) * | 2012-03-09 | 2013-09-12 | 佐藤長吉 | 食材の滅菌・保存方法 |
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